I see a trend of Hacker News envy emerging: The news of any startup (other than a Y Combinator company) that raises a large sum of money is derided and accompanied by a series of anecdotes of poor experiences.

I think there's so much good discussion to be had about fiverr. They created this huge marketplace for low cost services. They have impressive UI. They provide a win-win for both buyer and seller. They provide a great case study on the foot-in-the-door sales methodology through their impressive upsell system. This is a very unique and original business idea that has been executed very well on many accounts.